U.S. Navy Sailors assist local authorities in shuttling passengers and crew of Air Niugini flight PX56 to shore following the plane crashing into the sea on its approach to Chuuk International Airport in Weno, Chuuk, Micronesia, September 28, 2018. Business Insider has contacted Air Niugini for further comment.

Air Niugini chairman Kosta Constaninou said witnesses reported seeing the passenger board a dinghy as U.S. divers and locals rescued the passengers and crew from the sinking plane.

Two more of the passengers who had been in hospital have now been released, and the other four passengers are in stable condition.

The exact cause of the crash remains unclear.

The circumstances surrounding this accident are now a matter for relevant authorities as they begin their task of investigating the events that led to the incident and the actions which followed.